FlyWire A36 Engine Start Hot and Cold

FlyWire looks at starting the Big Bore Continental engine in the A36 Bonanza. Hot or Cold there are lots of techniques. Check out what works for us!

FlyWire is about exploring flight and the freedom this incredible experience brings us on a personal level. Flying has always captured the imagination and excitement of living life to its fullest. Hi, I'm Scott Perdue. In a former life I flew the F-4 and F-15E, more recently I retired from a major airline. I've written for several aviation magazines over the years, was a consultant for RAND, the USAF, Navy, NASA as well as few others, wrote a military thriller- 'Pale Moon Rising' (still on Kindle). But mostly I like flying, or teaching flying. Some of the most fun I had was with Tom Gresham on a TV show called 'Wings to Adventure". We flew lots of different airplanes all over the country. Now with FlyWire I want to showcase the fun in flying, share the joy and freedom of flight and explore the world with you. Make sure you subscribe if you want to go along for the ride!

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[johngreco]

I enjoy all your videos and look forward to future ones, Scott!!! Thank you

[sibtainbukhari]

Recently purchased my first Bonanza and my first aircraft with an engine this size. Finding your channel really useful Scott and a big fan. Love my Bonanza but not really a fan of the hot start! Unfortunately the technique you described Scott doesn’t work for me and I find that the only technique that works reliably for my motor is the deliberate flooding of the engine then mixture to idle cutoff throttle wide open then bringing in the mixture when she fires. As you say your hands kind of get in your way doing it, I feel I have too few hands and need another one or two to make this technique works the first time! Sometimes I have to try this technique 3 times or 4 before I can really catch it. I am actually starting to get a little worried about burning my started or causing an inadvertent fire ! My motor has a tornado alley turbo normaliser installed and my mechanic thinks there is some sort of a fuel overflow valve which isnt there and installing that may help . In giving that a go next for another $500 in the hope that might make hot starts easier but I am not feeling overly optimistic about it!

[jimbuff]

Another nice video Scott. 👍🏻 A great point was made when you said there’s a bunch of techniques out there and pilots should use what works for them. I fly my A-36 about 340 hours per year and get plenty of opportunities to do hot starts. Here’s my take: A “True” hot start won’t be experienced if the engine has not been brought up to normal operating temperature then allowed to sit and bake for an hour in the hot summer (while you eat that $100 burger). IMO A quick start up and run to the fuel pumps won’t get the engine that hot either, so a normal cold start works fine.

The real test is when you know vapor lock has occurred while the engine sat for a while after shut down. You can actually hear the fuel pump cavitating when you run it during priming. For me, those starts work best using the “cycle the fuel” for a minute with the controls at idle/cutoff. I will usually have to walk the throttle forward during the actual start sequence until the correct fuel/air mixture is achieved. Keep up the great work.

[Goody]

I have a tsio520NB it has to be the hardest hot start. What works one day doesn’t work the next lol.

[cassiositta]

Thanks for the video, regards from Brazil, I vê tried in a bonanza f33-a and it worked really well

[lakerenegadepilot]

Thank you for your tips. I tried the cold start method on my lake and it works amazingly well, starts right up. Hot start is a different story, it does not like your method, so I just leave the mixture cutoff, still fuel pressure, throttle at ~1000 rpm setting and I hit the starter and once it catches I slowly bring the mixture to full.

[kenlewis]

Thanks Scott. I will try it. I had tried that technique before but I was advancing the throttle much slower . Hot starting our Deb is a real pain....to the extent I just plan trips nonstop to avoid it.

[stephenmegargel]

Great Video Scott. Thanks for taking the time.

[JimmyLewisPilot]

Scott Perdue You're a genius. I went out today to pre-flight for tomorrows flight and had to try it. I have to say, this has to be the best hot start method I ever heard. Now I have only been flying for a little over a year. My Bo is very picky about a hot start! The only way was to run the fuel pump for a quick count of 30 before starting according to POH....the ONLY WAY. I hate running the fuel pump that long. I ran over to the fuel pump put the key back and tried what you explained in the video and she cranked for about 5 seconds until the throttle was in the sweet spot and she started right up as you said. I drove back to the hanger and just had to do it again.

[eduardoletti]

Hi Scott, I had a Bellanca Super Viking for 11 years with a IO-520 (300 hp). I used exactly the same start technique (cold) you've demonstrated and can't remember missing a start.

[mhrussell]

My preferred technique is to leave the throttle at idle and mixture where it is for normal ground ops. Then go to start and start the fuel pump. Fires right up every time. The problem is the heat soaked mechanical fuel pump vaporizes the initial fuel until it gets cooled off enough by the fuel.

[Nbolanos]

Trying this as soon as get my bird back from its annual, thanks for posting

[nancychace]

Stoichiometry - I'll have to review that 🙂 What's an unfrozen fighter pilot again? I get there needs to be some measure of accuracy...
Merry Christmas and Happy New Year ~ hope '21 is better for all of us.
PS - friendly reminder - please keep being careful of Covid - definitely not pretty if you have to deal with it directly. Good luck - stay healthy!🙂🍀🌠☕🧭✨🎄

[BonanzaPilot]

For the hot start I do the same thing but I leave the throttle full in and slowly pull out. Usually goes in 1-2 turns. Throttle goes to idle before the prop has time to speed up.

[davidpearn]

We hated a hot start in our old Comanche 400 ...the flat 8, particularly in hot weather.
We used to have to flood it to rid the vapour and then with mixture in cutoff and with full throttle we had to absolutely flog the starter.
A right pia.
I’d love to hear from anyone who managed it with less pain .

[bernardanderson]

Preflight Before starting Checklist in every aircraft I fly because my instructor always said that because you fly every day you will never know how easy it is to get distracted by a passenger or someone asking you why are you doing that and you have to start over and go through it with your passenger who's seating in the right seat

[ryanaquino]

Thanks for the video. Enjoy seeing well thought out procedures. An alternate method I've seen work is almost identical to yours, but you start with more open throttle, and bring the throttle back smoothly. I think it would fire at about the same throttle position, except your hand is already smoothly moving back to an idle power setting. Wanted to see if you've tried it that way.

[bradgray]

Since owning my A36 I have run the fuel pump for about 30 seconds for a hot start and it works fine but I will be trying this. Cheers.

[timoklippel]

Scott,
I use exact same technique for my IO-520 cold as well as hot. Works all the time!
Great videos by the way 👍
Which iPad Mount do you use?
Timo

[bernardanderson]

This is great to have a person who wants to help out with reading off the Checklist is great and a great way of a person who wants to become a successful professional pilot